Yes. Once your donation got progressed (manually within 48h) you receive an email from kickstarter@taitale.com with a link. You click it and link it to your taitale account. The donation will then be added to your balance. If you made multiple purchases, wait for all emails and link them before you choose a tier, you will not be able to change it later on. Addons can then be bought as well as additional addoncash.